From more testing:
A camonitor on PG1:image1:ArrayData shows that the values in the array are changing as the camera is moved around, so the array is getting updated.
ImageJ still shows a zero-value array. The image shown from the plugin is 1280x1024 (8-bit) as it should be, but no pixel values.
The Array Counter in for the StdArray increases with the image count, but I did notice that the Unique ID for each array does not change (not sure if this is relevent, have not paid attention to this parameter before).
-Zachary Brown, John Dobbins